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Ainat [17]
3 years ago
15

A beach ball a radius 15 centimeters what is the volume of the beach ball?

Mathematics
2 answers:
loris [4]3 years ago
8 0

Answer:

Hey!

Your answer is 14137.17cm^3 (centimetres cubed)

Step-by-step explanation:

The formula for a sphere's volume is 4/  3πxr^3

So we substitute the RADIUS IN...

=4/  3πx15^3   (15 cubed is 3,375) then you follow the formula...

And that gives us the answer of 14137.17cm^3!

HOPE THIS HELPS!!

sladkih [1.3K]3 years ago
4 0

Answer:

volume = 4/3 (pi x r^3)

Volume = 4/3 (pi x 15^3)

Volume = 4/3 (3.14 x 3375)

Volume = 14130 cubic cm

Step-by-step explanation:

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Five students wrote a mathematics test. The average mark was 68. If the marks for four of the students were 75, 62, 84 and 53, t
konstantin123 [22]

Answer:

66

Step-by-step explanation:

Use the formula for the mean of a set of numbers:

                  sum of the numbers

average = --------------------------------

                     count of numbers

Here we know that the average mark was 68, so we can write:

               

                           75 + 62 + 84 + 53 + x

average = 68 = ----------------------------------

                                           5

or                            274 + x

                  68 = -------------------

                                    5

Solving for x, we multiply both sides by 5:     340 = 274 + x.

Subtracting 274 from both sides effectively isolates x:

 340 = 274 + x

- 274    -274

------------------------

  66      =    x

The fifth student's mark was 66.

4 0
3 years ago
Work out m and c for the line:<br> y = X – 2
RUDIKE [14]
Y = mx + c therefore
m = 1
c = -2
4 0
2 years ago
What is the product?<br><br> (5r − 4)(r2 − 6r + 4)
maxonik [38]

Answer:

1r

Step-by-step explanation:

(5r-4)(2r-6r+4)

1(5r-4)+1(2r-6r+4)

5r-4+2r-6r+4

5r+2r-6=1r

1r-4+4

-4+4=0

1r

7 0
2 years ago
Determine the intercepts of the line -5x-4y=10
Alexxandr [17]

Answer:  

The <em>y </em>-intercept is: (0,−2.5)  

The <em>x </em>-intercept is: (−2,0)

Step-by-step explanation:

7 0
3 years ago
If 48 is 10% then what is 100%
Alecsey [184]
480 is 100%

48 = 10%

480 = 100%
4 0
3 years ago
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